Wiener Werkstatte Black & White Round Beaded Necklace. This necklace was made in early 20th Century and attributed to the Wiener Werkstatte, Vienna Austria. The necklace has been meticulously restrung. Each round ball features a unique graphic design in black and white beads. Then necklace is fitted with a mgnetic silver ball clasp. The necklace measures 19 inches long and the beads are approximately .75 inch diameter. The necklace is in excellent condition.